Question

in which order did the events forming our solar system occur?
the solar nebula became hot and dense pulling in more gas.this flattened into a rotating disk. it spun faster and faster, forming the sun.
gas was pulled toward the center, forming the sun. gas flattened into a rotating disk and became hot and dense, forming a solar nebula that spun faster and faster.
gas flattened into a rotating disk and became hot and dense, forming a solar nebula that spun faster and faster. gas was pulled toward the center, forming the sun.
the solar nebula spun faster and faster and flattened into a rotating disk. most of the gas was pulled toward the center, where it became hot and dense, forming the sun.

Explanation:

The solar system forms from a solar nebula, a cloud of gas and dust. First, the nebula collapses and spins faster, flattening into a rotating disk. Then, most of the gas is pulled to the dense, hot center, which forms the Sun. This matches the last option, while the others misorder the key steps (nebula first, then spinning/flattening, then central collapse to form the Sun).

Answer:

The solar nebula spun faster and faster and flattened into a rotating disk. Most of the gas was pulled toward the center, where it became hot and dense, forming the Sun.